Method and apparatus for the production of broken



A. D. CLARK METHOD AND APPARATUS FOR THE PRODUCTION OF BROKEN FILAMENT YARN Filed Dec. 1, 19359 2 Sheets-Sheet l I N VEN TOR.

A. D. CLARK March 18, 1941.

METHOD AND APPARATUS FOR THE PRODUCTION OF BROKEN FILAMENT YARN Filed Dec. 1, 1939 lilciotucd Mar. 18, 1941 APPARATUS FUR 'lll-lh PEM- DUCTIO UFBROKEN FEAR KENT YARN Alvah hale mark, Meadvillc, ha

American Viscose Corporation,

assignor to Wilmington,

Belt, a corporation oi Delaware Application lleccrnber l, 1939, berial lilo. Win65 9 hlaims.

This invention relates to methods and apparatus for broken filament yarn.

The present invention has for its principal obtw ject to provide an improved. method and appsratus tor the production of broken filament yarn from yarn comprising continuous filaments.

Other objects and advantages of the invention will be apparent from the following description it and accompanying drawings in which suitable terms of apparatus embodying the invention are shown.

Figure l is a view of an embodiment of the inventlon applied to an up twister.

Figure 2 is a, view of an embodiment of the invention applied to a down twister.

Figure 3 is a perspective view of an embodiment or the invention.

In accordance with the present invention, yarn fill comprising continuous filaments is passed over an abrasive member while being given a lateral improvements in the production or ill motion back and forth along the member. This causes certain filaments of the yarn to be broken. "While the invention is shown and described as it applied to certain twisting machinery, it is to be understood that it may be carried out on any type or yarn comprising continuous filaments and in conjunction with any twisting, winding or other operation wherein the running yarn may be given W a lateral movement.

The invention is shown in Figure l as applied to an up twister. In this figure, reference character i indicates yarn comprising continuous filaments being withdrawn from the revolving supply it: bobbin 2 and traveling through the flyer 3 to the take-up bobbin 4. The guide 8 and the guide l mounted on the traversing guide rail 6 direct the yarn onto the take-up bobbin. The yarn in traveling from the supply bobbin to the take-up bobllt bin passes over the abrasive means indicated generally by reference character 5.

The abrasive means as shown more particularly in Figure 3 comprises the abrasive member 9 which may be of abrasive material or have some it term of abrasive surface. The abrasive member is supported in position on the bracket I9 between the guide ill and the pair of guides H and 12. "The guide H] is mounted on the bracket in memher it and may be adjusted relative to the abrafi sive member by means of the slot l1 and attachting screw Ill. The pair member is which is mounted on the member to pivot about the axis of the guide ll. The pair of guides H and 12 are adjusted relative to the abrasive member by being pivoted about the axis of guides are fixed in the of the guide it and are held in adjusted position by means of the set screw it.

Due to the speed of revolution of the supply bobbin, the yarn being delivered forms a balloon. This ballooning motion of the traveling yarn is transformed by the guide means into a lateral movement back and forth along the abrasive member. The guide means retains the traveling yarn in the proper position relative to the abrasive member and determines the degree with Ill which it presses against the abrasive member and the amplitude of its lateral movement.

The extent or the action of the abrasive member on the yarn and the number of filaments that are broken are proportional to these factors. The 1d greater the number of filaments that are broken the more hairy or wool-like the resulting yarn will be in appearance. Accordingly different types of broken filament yarn may be produced by adjusting the guides relative to the abrasive memher.

The invention is shown in Figure 2 as applied to a down twister. In this figure, reference character indicates yarn comprising continuous filaments being withdrawn from the supply bobbin 28 through the feed rolls 2i, the guide 26 and the ring traveler 2G to the revolving take-up bobbin Zl. The ring traveler M is arranged on the ring twis er 22 which is carried by the traverse member 23. The yarn in traveling from the sup- 3U ply bobbin to the take-up bobbin passes over the abrasive means indicated generally by reference character 25. The abrasive means shown in this figure is of the same type as that shown in Figure 3 and described above in connection with the embodiment of the invention shown in Figure 1.

While preferred embodiments of the invention have been shown, it is to be understood that changes and variations may be made without departing from the spirit and scope of the invention as defined in the appended claims.

What I claim is:

1. In an apparatus for producing broken filament yarn, an abrasive member, means for passing yarn comprising continuous filaments over the abrasive member including means whereby a portion of the yarn is caused to balloon outwardly, means adjacent the abrasive member for positioning the traveling yarn relative to the abrasive member and for transforming the ballooning motion of the yarn into lateral movement back and forth along the abrasive member.

2. In an apparatus for producing broken filament yarn, a member having an abrasive surface, means for passing yarn comprising continuous F filaments over the abrasive surface including means whereby a portion of the yarn is caused to balloon outwardly, means adjacent the abrasive surface for positioning the traveling yarn relative to the abrasive surface and for transforming the ballooning motion of the yarn into lateral movement back and forth along the abrasive surface.

3. In an apparatus for producing broken filament yarn, an abrasive member, means for passing yarn comprising continuous filaments over the abrasive member including means whereby a portion of the yarn is caused to balloon outwardly, means adjacent the abrasive member for maintaining the yarn in continuous contact with the abrasive member and for transforming the ballooning motion of the yarn into a lateral movement back and forth along the abrasive member.

4. In an apparatus for producing broken filament yarn, an elongated abrasive member extending transversely across the path of travel of the yarn, means for passing yarn comprising continuous filaments over the abrasive member including means whereby a portion of the yarn is caused to balloon outwardly, means adjacent the abrasive member for maintaining the yarn in continuous contact with the abrasive member and for transforming the ballooning motion of the yarn into a lateral movement back and forth along the abrasive member.

5. In an apparatus for producing broken filament yarn, an abrasive member, means for passing yarn comprising continuous filaments over the abrasive member including means whereby a portion of the yarn is caused to balloon outwardly, a guiding means adjacent the abrasive member for maintaining the yarn in continuous contact with the abrasive member and for transforming the ballooning motion of the yarn into lateral movement back and forth along the abrasive member, and means for adjusting the position of the guiding means relative to the abrasive member to vary the degree with which the yarn presses against the abrasive member and the extent to which the filaments are broken.

6. In an apparatus for producing broken filament yarn an abrasive member, means for passing yarn comprising continuous filaments over the abrasive member including means whereby a portion of the yarn is caused to balloon outwardly, a guiding means adjacent the abrasive member for maintaining the yarn in continuous contact with the abrasive member and for transforming the ballooning motion of the yarn into lateral movement back and forth along the abrasive member and means for adjusting the position of the guiding means relative to the abrasive member to vary the amplitude of the lateral movement of the yarn back and forth along the abrasive member and the extent to which the filaments are broken.

7. In an apparatus for producing broken filament yarn, an abrasive member, means for passing yarn comprising continuous filaments over the abrasive member including means whereby a portion of the yarn is caused to balloon outwardly, a guiding means adjacent the abrasive member for maintaining the yarn in continuous contact with the abrasive member and for transforming the ballooning motion of the yarn into lateral movement back and forth along the abrasive member, and means for adjusting the position of the guiding means relative to the abrasive member to vary the degree with which the yarn presses against the abrasive member and the amplitude of its lateral movement back and forth along the abrasive member and the extent to which the filaments are broken.

8. A method of making broken filament yarn including the steps of passing a yarn comprising continuous filaments over an abrasive member, ballooning a portion of the yarn outwardly, maintaining the position of the yarn relative to the abrasive member so that the yarn presses against the abrasive member continuously, and transforming the balloon-ing motion of the yarn into lateral movement back and forth along the abrasive member.

9. A method of making broken filament yam including the steps of passing a yarn comprising continuous filaments over an abrasive member, ballooning a portion of the yarn outwardly, maintaining the position of the yarn relative to the abrasive member so that the yarn presses against the abrasive member with a uniform degree of pressure and transforming the ballooning motion of the yarn into lateral movement back and forth along the abrasive member.

ALVAH DALE CLARK.

CERTIFICATE O CORRECTION. Patent'No. 2,2 L 9h7. March 1 19m.

ALVAH DALE CLARK.

It is hereby certified that error appears in the above numbered patent requiring correction as follows:- Page 1, upper left-hand corner thereof, I

for the words 'Reissued Mar. 1 19m"- read --P'a ten ted Mar. 1 19in; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case inthe Patent Office.

Signed and sealed this 'llth day of Jenuary, A. D. 19%."

. Henry Van Arsdale, (Seal) Acting Commissioner of Patents. 

